Access to TMC Microstep Lookup Table Registers

I’m working through some testing on TMC2130 microstep issues and would like a way to alter the default TMC microstep table. Typically all that’s needed is the ability to read an write to the registers listed for:
MSLUT[0] through MSLUT[7]

Would it be difficult to add that? It doesn’t seem like SET_TMC_FIELD has the ability to access theses settings.